class_docstr: Raised if a class requests a module to be present to work and it cannot
  be imported
code: def __init__(self, message, *args):
      super(ModuleImportError, self).__init__(message)
      self.args = args
  
file_path: backtrader/backtrader/errors.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
label_desc: Use image node_id 1 to create a new ModuleImportError object from inherited base classes: BacktraderError with example: obj = ModuleImportError(message)